Alright, let's work through 1894 times 5641 step by step
1894 × 5641 = 5641 × (1894)
+ 5641 × 4 producing 22564
+ 5641 × 90 that is equal 507690
+ 5641 × 800 which equals 4512800
+ 5641 × 1000 giving us 5641000

= 10684054
